Pneumatic tire



PNEUMATIC TIRE original Filed oct. 11, 1920 Patented duly 2d, 1223,

TENT PCGE@ JQSEH ROGERS, @1F NEW YUM, N, Y.

PNEUMATI@ TIRE.

Application nled october 11, 1920, serial to. 416,161. Renewed February 12, 1923.

To all whom t may cof/wem:

Be it known that l, Josnrn A. Roenes, a subject of the King of England, residing at New York city, in the county of New York and State oi New York, have invented certain new and useful improvements in Pneumatic rlires, of which the following is a specification,

rlhis invention has relation to pneumatic tires, with particular reference to inner tubestherefor, and has for an object to provide an inner tube which is constructed of a plurality of flexible partitions defining annular compartments, each of which are independent and separably'inlated so that in the event one 'compartment should be tured the rest will be unaffected an the form and rotundity of the pneumatic tire casing will be undisturbed.

Another object of the invention is to provide an improved air valve for an inner tube of my construction whereby the compartments may be readily indated.

1n addition to the foregoing this invention comprehends improvements in the details oi construction and arrangement oi parts to be hereinafter described and particularly set forth in the appended claims.

1n the accompanying drawings in which similar and corresponding parts are designated by the same characters oi reference throughout the several views in which they appear.

Figure 1 is a view in transverse section,

" partly in perspective illustrating an inner tube constructed in accordance with my invention.

`Figure 2 is a view in section on an enlarged scale of the valve, and ,t

Figure 3 is a transverse section taken on the line 3 3 of Figure 2e 'W ith reference to the drawings, 10 indi cates the ordinarl ypneumatic tire casing having the clinc er beadl 11. -llnclosed within the casing is an inner tube constructed in accordancewith my invention and comprising the tubular casing 12 which is annular and continuous throughout its length. Extending across the interior ot the casing 12 are a plurality of partitions 13 normally :forming chords of the cross secm tional circumference ot the casing, said partitions being annular, that is, extended around the inner tube continuously and are entended from points adjacent the inner periphery oi the tube outward, radiating and secured at their outer edges to the inner surface of the casing 12 at points in spaced rel lation as shown in Figure 1. ln this manner a plurality of contiguous annular comn partments 14 is dened. Each compartment is independent of the other and separately inflatable, and l provide a specific form of lurality of longitudinal pasmunicating with one of the channels 17. y

'The outer end of each tubular extension 18 is threaded and is designed to receive a nut 19. A plurality of openings are provided in the inner periphery of the casing 12 of the inner tube, one opening communicating with each of the compartments 1d and the corresponding y,tubular entension 18 is inserted in the` corresponding opening, the walls of the casing 12 being slipped around the nut`19. A nut 20 also engaging the threaded portion or' the tubular extension 18 is 'then turned to bear tightly against the wall oil the inner tube and to form an air tight joint. Subsequently cement or the like may be ap lied to further ensure the formation or a tig t joint. A valve seat 21'is formed midway of the length of each passage 17 anda rod 22 is extended through each passage and carries a valve 23 bearing against the seat 21. A;

^ coil spring 2t is embraced about each rod and is designed to retain the valve upon its seat. The outer end ot each rod is guided within a slug 25 threaded within the than nel 1'? so that it may be engagedbyany inu strument inserted in the channel Lito,-discharge the air from any compartmentjwlien desired.l 'lhe outer end oic' the 1li is then threaded tof receive a cap 26 which encludes dust.

lill@ event that any compartment should be punctured by the penetration of nails or other objects through the tire casing and the air in said compartment permitted to escape the expansion of the remaining air Within the tire Will thrust the next adjacent partition wall 13 against the ruptured Wall and thus form a tight joint. In this manner the tire Will not become'totally de- Hated as would occur Where the inner tube is formed With'only a single channel. rllhus, a single puncture more or less Would not delay travel and if desired the tire could be again pumped up to the required pressure. It will be obvious that owing to the fact that the outer ends of the partitions 13 are secured to the casing 12 at points in spaced relation that a sharp object penetrating the thread portion can puncture only one compartment at a time. Other uses and advantages Will readily occur to those familiar with the art to which this invention appertains.

While ll have illustrated and described my invention with some degree of particul larity, I realize that in practice Various alterations therein may be made. l therefore reserve the right Yand privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what Hating device including a casing,. means i formed at one end of saidlast mentioned casing for retaining the same in gripping relationwith the clincher beads of a tire casing, said infiating device having a plurality of channels therein, a tube formed with the bead gripping portion and communicating With the respective channels, and means Within each channel controlling the passage thereof.

2. An inner tube including an endless tubular casing` of elastic material', a plural- .ity of circumferential partitions located therein defining a plurality of compartments, an inflating device including a cylindrical casing, a disc formed at one end of said casing having an annular groove to be received between the clincher beads of spring press valve in each channel controlling the passage thereof.

ln testimony whereof l aflix my signature.

JUSEPH A. ROGERS. [ns] 

